Flat roofs are common across Southern Arizona—and for good reason. They’re efficient, cost-effective, and well-suited to our desert climate. But they also require a different kind of upkeep than pitched roofs. One of the biggest questions we hear from homeowners and property managers is: “Does my flat roof need a new coating?” If you’re asking the question, it’s probably time to take a closer look.
Why Coatings Matter
Flat roofs don’t shed water like pitched roofs. Instead, they rely on slight slopes and drainage systems to keep water moving. A good roof coating creates a seamless, waterproof barrier that protects against ponding water, UV damage, and thermal expansion.
In Tucson’s climate, sun and heat take a toll. Over time, even the best coatings can crack, blister, or wear away. That’s when water finds its way in—and leaks can go unnoticed until serious damage is done.
5 Signs Your Flat Roof Might Need a New Coating
You don’t have to be a roofing expert to spot potential problems. Here’s what to look for:
- Cracks or blisters in the surface – These allow water to seep in and weaken the roof system underneath.
- Ponding water that doesn’t drain within 48 hours – This often indicates issues with slope, drainage, or coating wear.
- Peeling or bubbling coating – A sign that the seal has been compromised and can no longer protect the roof.
- Discoloration or chalky residue – UV damage can degrade the coating over time, leaving it brittle and ineffective.
- Interior water stains – By the time you see it inside, the issue has likely been brewing for a while.
When to Schedule an Inspection
If your roof is more than five years old—or you can’t remember the last time it was looked at—get it checked. Tucson’s extreme summer heat, followed by monsoon rains, creates a cycle of expansion and contraction that wears down roofing materials fast.
At Lee Hoffman Roofing, we recommend inspections:
- Every 1–2 years for commercial or multi-unit properties
- Every 2–3 years for residential homes
- Immediately after a major storm or heavy monsoon season
Why Timing Matters
The best time to coat your roof is before damage occurs—not after a leak appears. Coating a roof in good condition can add 5–10 years to its lifespan. But once water infiltrates the system, repairs become more costly and complex.
Also, coatings require the right weather to adhere properly—usually during dry, mild conditions. That’s why spring and fall are ideal.
A Trusted Eye Makes All the Difference
You don’t have to guess whether your flat roof needs attention. A professional inspection can help you:
- Understand your roof’s current condition
- Determine if a coating is appropriate (and if so, which type)
- Avoid unnecessary repairs or premature replacements
- Extend the life of your investment with confidence
Don’t Wait for Leaks. Know Where You Stand. Schedule a flat roof inspection with Lee Hoffman Roofing. We’ll give you an honest assessment—and if your roof’s in good shape, we’ll tell you that too.